1/* 2 * arch/arm/mach-ep93xx/edb93xx.c 3 * Cirrus Logic EDB93xx Development Board support. 4 * 5 * EDB93XX, EDB9301, EDB9307A 6 * Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com> 7 * 8 * EDB9302 9 * Copyright (C) 2006 George Kashperko <george@chas.com.ua> 10 * 11 * EDB9302A, EDB9315, EDB9315A 12 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> 13 * 14 * EDB9307 15 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org> 16 * 17 * EDB9312 18 * Copyright (C) 2006 Infosys Technologies Limited 19 * Toufeeq Hussain <toufeeq_hussain@infosys.com> 20 * 21 * This program is free software; you can redistribute it and/or modify 22 * it under the terms of the GNU General Public License as published by 23 * the Free Software Foundation; either version 2 of the License, or (at 24 * your option) any later version. 25 */ 26 27#include <linux/kernel.h> 28#include <linux/init.h> 29#include <linux/platform_device.h> 30#include <linux/gpio.h> 31#include <linux/i2c.h> 32#include <linux/i2c-gpio.h> 33#include <linux/spi/spi.h> 34 35#include <sound/cs4271.h> 36 37#include <mach/hardware.h> 38#include <linux/platform_data/video-ep93xx.h> 39#include <linux/platform_data/spi-ep93xx.h> 40#include <mach/gpio-ep93xx.h> 41 42#include <asm/mach-types.h> 43#include <asm/mach/arch.h> 44 45#include "soc.h" 46 47static void __init edb93xx_register_flash(void) 48{ 49 if (machine_is_edb9307() || machine_is_edb9312() || 50 machine_is_edb9315()) { 51 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M); 52 } else { 53 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); 54 } 55} 56 57static struct ep93xx_eth_data __initdata edb93xx_eth_data = { 58 .phy_id = 1, 59}; 60 61 62/************************************************************************* 63 * EDB93xx i2c peripheral handling 64 *************************************************************************/ 65static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = { 66 .sda_pin = EP93XX_GPIO_LINE_EEDAT, 67 .sda_is_open_drain = 0, 68 .scl_pin = EP93XX_GPIO_LINE_EECLK, 69 .scl_is_open_drain = 0, 70 .udelay = 0, /* default to 100 kHz */ 71 .timeout = 0, /* default to 100 ms */ 72}; 73 74static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = { 75 { 76 I2C_BOARD_INFO("isl1208", 0x6f), 77 }, 78}; 79 80static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = { 81 { 82 I2C_BOARD_INFO("ds1337", 0x68), 83 }, 84}; 85 86static void __init edb93xx_register_i2c(void) 87{ 88 if (machine_is_edb9302a() || machine_is_edb9307a() || 89 machine_is_edb9315a()) { 90 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 91 edb93xxa_i2c_board_info, 92 ARRAY_SIZE(edb93xxa_i2c_board_info)); 93 } else if (machine_is_edb9302() || machine_is_edb9307() 94 || machine_is_edb9312() || machine_is_edb9315()) { 95 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 96 edb93xx_i2c_board_info, 97 ARRAY_SIZE(edb93xx_i2c_board_info)); 98 } 99} 100 101 102/************************************************************************* 103 * EDB93xx SPI peripheral handling 104 *************************************************************************/ 105static struct cs4271_platform_data edb93xx_cs4271_data = { 106 .gpio_nreset = -EINVAL, /* filled in later */ 107}; 108 109static int edb93xx_cs4271_hw_setup(struct spi_device *spi) 110{ 111 return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6, 112 GPIOF_OUT_INIT_HIGH, spi->modalias); 113} 114 115static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi) 116{ 117 gpio_free(EP93XX_GPIO_LINE_EGPIO6); 118} 119 120static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value) 121{ 122 gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value); 123} 124 125static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = { 126 .setup = edb93xx_cs4271_hw_setup, 127 .cleanup = edb93xx_cs4271_hw_cleanup, 128 .cs_control = edb93xx_cs4271_hw_cs_control, 129}; 130 131static struct spi_board_info edb93xx_spi_board_info[] __initdata = { 132 { 133 .modalias = "cs4271", 134 .platform_data = &edb93xx_cs4271_data, 135 .controller_data = &edb93xx_cs4271_hw, 136 .max_speed_hz = 6000000, 137 .bus_num = 0, 138 .chip_select = 0, 139 .mode = SPI_MODE_3, 140 }, 141}; 142 143static struct ep93xx_spi_info edb93xx_spi_info __initdata = { 144 .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info), 145}; 146 147static void __init edb93xx_register_spi(void) 148{ 149 if (machine_is_edb9301() || machine_is_edb9302()) 150 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1; 151 else if (machine_is_edb9302a() || machine_is_edb9307a()) 152 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2); 153 else if (machine_is_edb9315a()) 154 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14; 155 156 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info, 157 ARRAY_SIZE(edb93xx_spi_board_info)); 158} 159 160 161/************************************************************************* 162 * EDB93xx I2S 163 *************************************************************************/ 164static struct platform_device edb93xx_audio_device = { 165 .name = "edb93xx-audio", 166 .id = -1, 167}; 168 169static int __init edb93xx_has_audio(void) 170{ 171 return (machine_is_edb9301() || machine_is_edb9302() || 172 machine_is_edb9302a() || machine_is_edb9307a() || 173 machine_is_edb9315a()); 174} 175 176static void __init edb93xx_register_i2s(void) 177{ 178 if (edb93xx_has_audio()) { 179 ep93xx_register_i2s(); 180 platform_device_register(&edb93xx_audio_device); 181 } 182} 183 184 185/************************************************************************* 186 * EDB93xx pwm 187 *************************************************************************/ 188static void __init edb93xx_register_pwm(void) 189{ 190 if (machine_is_edb9301() || 191 machine_is_edb9302() || machine_is_edb9302a()) { 192 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */ 193 ep93xx_register_pwm(0, 1); 194 } else if (machine_is_edb9307() || machine_is_edb9307a()) { 195 /* EP9307 only has pwm.0 (PWMOUT) */ 196 ep93xx_register_pwm(1, 0); 197 } else { 198 /* EP9312 and EP9315 have both */ 199 ep93xx_register_pwm(1, 1); 200 } 201} 202 203 204/************************************************************************* 205 * EDB93xx framebuffer 206 *************************************************************************/ 207static struct ep93xxfb_mach_info __initdata edb93xxfb_info = { 208 .flags = 0, 209}; 210 211static int __init edb93xx_has_fb(void) 212{ 213 /* These platforms have an ep93xx with video capability */ 214 return machine_is_edb9307() || machine_is_edb9307a() || 215 machine_is_edb9312() || machine_is_edb9315() || 216 machine_is_edb9315a(); 217} 218 219static void __init edb93xx_register_fb(void) 220{ 221 if (!edb93xx_has_fb()) 222 return; 223 224 if (machine_is_edb9307a() || machine_is_edb9315a()) 225 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0; 226 else 227 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3; 228 229 ep93xx_register_fb(&edb93xxfb_info); 230} 231 232 233/************************************************************************* 234 * EDB93xx IDE 235 *************************************************************************/ 236static int __init edb93xx_has_ide(void) 237{ 238 /* 239 * Although EDB9312 and EDB9315 do have IDE capability, they have 240 * INTRQ line wired as pull-up, which makes using IDE interface 241 * problematic. 242 */ 243 return machine_is_edb9312() || machine_is_edb9315() || 244 machine_is_edb9315a(); 245} 246 247static void __init edb93xx_register_ide(void) 248{ 249 if (!edb93xx_has_ide()) 250 return; 251 252 ep93xx_register_ide(); 253} 254 255 256static void __init edb93xx_init_machine(void) 257{ 258 ep93xx_init_devices(); 259 edb93xx_register_flash(); 260 ep93xx_register_eth(&edb93xx_eth_data, 1); 261 edb93xx_register_i2c(); 262 edb93xx_register_spi(); 263 edb93xx_register_i2s(); 264 edb93xx_register_pwm(); 265 edb93xx_register_fb(); 266 edb93xx_register_ide(); 267} 268 269 270#ifdef CONFIG_MACH_EDB9301 271MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board") 272 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 273 .atag_offset = 0x100, 274 .map_io = ep93xx_map_io, 275 .init_irq = ep93xx_init_irq, 276 .init_time = ep93xx_timer_init, 277 .init_machine = edb93xx_init_machine, 278 .init_late = ep93xx_init_late, 279 .restart = ep93xx_restart, 280MACHINE_END 281#endif 282 283#ifdef CONFIG_MACH_EDB9302 284MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board") 285 /* Maintainer: George Kashperko <george@chas.com.ua> */ 286 .atag_offset = 0x100, 287 .map_io = ep93xx_map_io, 288 .init_irq = ep93xx_init_irq, 289 .init_time = ep93xx_timer_init, 290 .init_machine = edb93xx_init_machine, 291 .init_late = ep93xx_init_late, 292 .restart = ep93xx_restart, 293MACHINE_END 294#endif 295 296#ifdef CONFIG_MACH_EDB9302A 297MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board") 298 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 299 .atag_offset = 0x100, 300 .map_io = ep93xx_map_io, 301 .init_irq = ep93xx_init_irq, 302 .init_time = ep93xx_timer_init, 303 .init_machine = edb93xx_init_machine, 304 .init_late = ep93xx_init_late, 305 .restart = ep93xx_restart, 306MACHINE_END 307#endif 308 309#ifdef CONFIG_MACH_EDB9307 310MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board") 311 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */ 312 .atag_offset = 0x100, 313 .map_io = ep93xx_map_io, 314 .init_irq = ep93xx_init_irq, 315 .init_time = ep93xx_timer_init, 316 .init_machine = edb93xx_init_machine, 317 .init_late = ep93xx_init_late, 318 .restart = ep93xx_restart, 319MACHINE_END 320#endif 321 322#ifdef CONFIG_MACH_EDB9307A 323MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board") 324 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 325 .atag_offset = 0x100, 326 .map_io = ep93xx_map_io, 327 .init_irq = ep93xx_init_irq, 328 .init_time = ep93xx_timer_init, 329 .init_machine = edb93xx_init_machine, 330 .init_late = ep93xx_init_late, 331 .restart = ep93xx_restart, 332MACHINE_END 333#endif 334 335#ifdef CONFIG_MACH_EDB9312 336MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board") 337 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */ 338 .atag_offset = 0x100, 339 .map_io = ep93xx_map_io, 340 .init_irq = ep93xx_init_irq, 341 .init_time = ep93xx_timer_init, 342 .init_machine = edb93xx_init_machine, 343 .init_late = ep93xx_init_late, 344 .restart = ep93xx_restart, 345MACHINE_END 346#endif 347 348#ifdef CONFIG_MACH_EDB9315 349MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board") 350 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 351 .atag_offset = 0x100, 352 .map_io = ep93xx_map_io, 353 .init_irq = ep93xx_init_irq, 354 .init_time = ep93xx_timer_init, 355 .init_machine = edb93xx_init_machine, 356 .init_late = ep93xx_init_late, 357 .restart = ep93xx_restart, 358MACHINE_END 359#endif 360 361#ifdef CONFIG_MACH_EDB9315A 362MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board") 363 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 364 .atag_offset = 0x100, 365 .map_io = ep93xx_map_io, 366 .init_irq = ep93xx_init_irq, 367 .init_time = ep93xx_timer_init, 368 .init_machine = edb93xx_init_machine, 369 .init_late = ep93xx_init_late, 370 .restart = ep93xx_restart, 371MACHINE_END 372#endif 373